An inane hacking group called "Lizard Squad" is taking responsibility for the service problems and insisting that people RT their tweets before they'll fix them. There's no confirmation that this group is definitely responsible, but they've been teasing plans to screw up these networks for weeks. Lizard Squad is already infamous in the gaming world for its history of random attacks. This past August, it gained notoriety attacking Runescape and League of Legends, so this latest attack would be a continuation of its dipshit activities.

There are a number of different Twitter accounts claiming to be this hacker group, and it looks like at least one of them made a deal with Kim DotCom to end the hack, as Mashable pointed out:

Thanks @LizardMafia for stopping attack on XBOX Live & PSN. Let everyone play with their Xmas gifts. Your Mega vouchers have been approved!

Yet the 3000 MegaPrivacy vouchers Kim Dotcom tried to use as an olive branch, people are still having a hard time using Xbox Live and PSN, so perhaps the hackers were not satisfied with their bounty. It's whatever the opposite of a Christmas miracle is.